DZ74-63 Series 2P 10A Mini Circuit Breaker Switch

DZ74-63 Series 2P 10A Mini Circuit Breaker Switch Electricians, control panel builders, and electrical maintenance engineers utilize this 2P (Double Pole) 10A miniature circuit breaker (MCB) to safeguard electrical circuits against harmful overcurrent faults and short circuits. Consequently, it provides simultaneous disconnection of both the live and neutral lines (or two active phases) to isolate downstream equipment completely during a fault condition. Therefore, this DIN rail-mounted safety switch serves as a foundational protection component in residential distribution boxes, commercial control panels, and industrial machinery systems.

Key Features:

• Dual-Pole Simultaneous Isolation: Designed with a mechanically linked internal mechanism that ensures both poles trip concurrently, avoiding partial circuit isolation.
• Reliable Thermal-Magnetic Tripping: Combines a bimetallic element for long-term overload protection with an electromagnetic coil for instantaneous short-circuit defense.
• Standard 35mm DIN Rail Installation: Features a universal snap-fit mounting design that allows rapid, toolless clip-on assembly inside standard distribution consumer units.
• High breaking Efficiency: Engineered to interrupt fault currents up to 4500A safely, preventing damage to downstream wire tracks and connected machinery.
• High-Impact Flame-Retardant Housing: Enclosed in an insulated, self-extinguishing polymer casing that delivers robust thermal resistance and mechanical durability.

Technical Specifications:

• Model Classification: DZ74-63 / DZ47-63 Series.
• Number of Poles: 2P (Double Pole).
• Rated Current (In): 10 A.
• Rated Voltage (Ue): 230V / 400V AC.
• Rated Breaking Capacity: 4500 A (4.5 kA).
• Tripping Curve Profile: C-Type (Standard inductive and resistive load profiles).
• Rated Frequency: 50 Hz / 60 Hz.
• Mechanical Lifespan: ≥ 10,000 cycles.
• Electrical Lifespan: ≥ 4,000 cycles.

Mechanical Specifications:

• Mounting Support: Quick-mount snap mechanism onto 35 mm symmetric DIN rails.
• Terminal Clamping Construction: Elevated screw box-type tunnel terminals for solid conductor tracking.
• Wiring Capacity Range: Accepts stranded or solid core wiring configurations from 1.5 mm² up to 25 mm².
• Ingress Protection Rating: IP20 finger-safe terminal architecture.

Dimensions:

• Module Width: ≈ 36.00 mm (Standard two-pole width distribution space).
• Overall Height: ≈ 80.00 mm.
• Total Profile Depth: ≈ 75.00 mm.
• Unit Weight: ≈ 170.00 g.

Pinout and Wiring:

• Top Terminals (Line/Input): Accept incoming power feeds (typically Live and Neutral lines, or Phase 1 and Phase 2 inputs).
• Bottom Terminals (Load/Output): Connect directly to the downstream branch lines supplying the appliance or control grid.

Datasheet Reference: Download Datasheet

• DZ74-63 2P 10A Miniature Circuit Breaker Dimensional Drawings and Tripping Characteristic Datasheet

Commonly Used in:

• Main Supply Isolation: Acting as a dedicated dual-line sub-panel isolation switch for dedicated home appliance lines or laboratory test benches.
• Industrial Automation Controls: Guarding critical single-phase control circuits, operational instruments, and low-power control transformers.
• HVAC Equipment Panels: Isolating auxiliary fan loops, ventilation actuators, and small circulation pump motors safely.

Applications:

• Comprehensive Dual-Line Branch Protection: Safeguarding electrical hardware loops from dangerous short-circuit failures. However, matching a C-type breaker with highly sensitive electronic apparatus requiring high-speed protection can result in sluggish trip responses under low-threshold faults; therefore, engineers must verify that downstream load profiles correctly correspond to the breaker’s reactive trip curve characteristics.

Equivalent Models:

• DZ74-63 1P 10A Circuit Breaker: A compact single-pole variant designed exclusively to interrupt the live phase line while sharing a common neutral bar.
• DZ74-63 2P 16A Circuit Breaker: A physically identical dual-pole switch with an elevated 16A continuous thermal carrying limit for higher-demand loads.

Package Includes:

• 1 × DZ74-63 Series 2P Miniature Circuit Breaker (10A)